diff options
Diffstat (limited to 'drivers/gpu/drm/drm_client_modeset.c')
-rw-r--r-- | drivers/gpu/drm/drm_client_modeset.c | 54 |
1 files changed, 46 insertions, 8 deletions
diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c index 006bf7390e7d..e95fceac8f8b 100644 --- a/drivers/gpu/drm/drm_client_modeset.c +++ b/drivers/gpu/drm/drm_client_modeset.c @@ -149,6 +149,10 @@ drm_connector_pick_cmdline_mode(struct drm_connector *connector) prefer_non_interlace = !cmdline_mode->interlace; again: list_for_each_entry(mode, &connector->modes, head) { + /* Check (optional) mode name first */ + if (!strcmp(mode->name, cmdline_mode->name)) + return mode; + /* check width/height */ if (mode->hdisplay != cmdline_mode->xres || mode->vdisplay != cmdline_mode->yres) @@ -804,22 +808,23 @@ free_connectors: EXPORT_SYMBOL(drm_client_modeset_probe); /** - * drm_client_panel_rotation() - Check panel orientation + * drm_client_rotation() - Check the initial rotation value * @modeset: DRM modeset * @rotation: Returned rotation value * - * This function checks if the primary plane in @modeset can hw rotate to match - * the panel orientation on its connector. + * This function checks if the primary plane in @modeset can hw rotate + * to match the rotation needed on its connector. * * Note: Currently only 0 and 180 degrees are supported. * * Return: * True if the plane can do the rotation, false otherwise. */ -bool drm_client_panel_rotation(struct drm_mode_set *modeset, unsigned int *rotation) +bool drm_client_rotation(struct drm_mode_set *modeset, unsigned int *rotation) { struct drm_connector *connector = modeset->connectors[0]; struct drm_plane *plane = modeset->crtc->primary; + struct drm_cmdline_mode *cmdline; u64 valid_mask = 0; unsigned int i; @@ -840,12 +845,42 @@ bool drm_client_panel_rotation(struct drm_mode_set *modeset, unsigned int *rotat *rotation = DRM_MODE_ROTATE_0; } + /** + * The panel already defined the default rotation + * through its orientation. Whatever has been provided + * on the command line needs to be added to that. + * + * Unfortunately, the rotations are at different bit + * indices, so the math to add them up are not as + * trivial as they could. + * + * Reflections on the other hand are pretty trivial to deal with, a + * simple XOR between the two handle the addition nicely. + */ + cmdline = &connector->cmdline_mode; + if (cmdline->specified) { + unsigned int cmdline_rest, panel_rest; + unsigned int cmdline_rot, panel_rot; + unsigned int sum_rot, sum_rest; + + panel_rot = ilog2(*rotation & DRM_MODE_ROTATE_MASK); + cmdline_rot = ilog2(cmdline->rotation_reflection & DRM_MODE_ROTATE_MASK); + sum_rot = (panel_rot + cmdline_rot) % 4; + + panel_rest = *rotation & ~DRM_MODE_ROTATE_MASK; + cmdline_rest = cmdline->rotation_reflection & ~DRM_MODE_ROTATE_MASK; + sum_rest = panel_rest ^ cmdline_rest; + + *rotation = (1 << sum_rot) | sum_rest; + } + /* * TODO: support 90 / 270 degree hardware rotation, * depending on the hardware this may require the framebuffer * to be in a specific tiling format. */ - if (*rotation != DRM_MODE_ROTATE_180 || !plane->rotation_property) + if ((*rotation & DRM_MODE_ROTATE_MASK) != DRM_MODE_ROTATE_180 || + !plane->rotation_property) return false; for (i = 0; i < plane->rotation_property->num_values; i++) @@ -856,12 +891,11 @@ bool drm_client_panel_rotation(struct drm_mode_set *modeset, unsigned int *rotat return true; } -EXPORT_SYMBOL(drm_client_panel_rotation); +EXPORT_SYMBOL(drm_client_rotation); static int drm_client_modeset_commit_atomic(struct drm_client_dev *client, bool active) { struct drm_device *dev = client->dev; - struct drm_plane_state *plane_state; struct drm_plane *plane; struct drm_atomic_state *state; struct drm_modeset_acquire_ctx ctx; @@ -879,6 +913,8 @@ static int drm_client_modeset_commit_atomic(struct drm_client_dev *client, bool state->acquire_ctx = &ctx; retry: drm_for_each_plane(plane, dev) { + struct drm_plane_state *plane_state; + plane_state = drm_atomic_get_plane_state(state, plane); if (IS_ERR(plane_state)) { ret = PTR_ERR(plane_state); @@ -900,7 +936,9 @@ retry: struct drm_plane *primary = mode_set->crtc->primary; unsigned int rotation; - if (drm_client_panel_rotation(mode_set, &rotation)) { + if (drm_client_rotation(mode_set, &rotation)) { + struct drm_plane_state *plane_state; + /* Cannot fail as we've already gotten the plane state above */ plane_state = drm_atomic_get_new_plane_state(state, primary); plane_state->rotation = rotation; |